Question
The current ratio of the ages of 'Armaan' and 'Bittu' is
such that six years from now, it will be 5:4, respectively. Presently, 'Chetna's age exceeds 'Bittu's by 18 years. If the ratio of the ages of 'Armaan' and 'Chetna' was 4:7 eight years ago, determine the sum of the current ages of 'Bittu' and 'Chetna'.Solution
ATQ, Let the ages of ‘Armaan’ and ‘Bittu’, 6 years hence be 5p years and 4p years respectively Therefore, present age of ‘Armaan’ = (5p – 6) years Present age of ‘Bittu’ = (4p – 6) years Present age of ‘Chetna’ = (4p – 6 + 18) = (4p + 12) years According to the question, (5p – 6 – 8)/(4p + 12 – 8) = 4/7 Or, p = 114/19 = 6 years Required sum = (4p – 6 + 4p + 12) = 54 years
Feni is made from
Which are of the following describes the characteristics of Sedges?
An extreme modification in the order Diptera, where hind wings are reduced to nubs used for balance and direction during flight is
Rice variety IR–36 belongs to the groups of:
Which soil type is formed under waterlogged conditions and exhibits bluish-grey mottling?
The Backcross method of breeding is used to:
Urea contains:Â
Photosynthesis cycle of C₃ plants isÂ
Match List I with List II:
Choose the correct answer ...
Weed cause relatively more yield loss of rice when the crop isÂ